Guide / On the schematic
Digital logic
Gate logic and comparators in textbook notation, with HIGH / LOW results and truth tables.
Switch an equation to Digital
- Open an equation in the Eqs tab and switch it from Analog to Digital. Each mode keeps its own equation, so you can switch back.
- Write it in textbook notation: an overbar for NOT,
·for AND,+for OR,⊕for XOR. Or type the words AND, OR, NOT, NAND, NOR. - The output shows on the schematic as HIGH or LOW.
Inputs with real values
- Give an input its real value and the threshold above which it's HIGH: it reads HIGH or LOW from that.
- Compare real values directly, e.g.
(V_in > V_ref) · EN. - Under Output levels, set what HIGH and LOW mean as values for equations this one feeds (e.g. 3.3 V and 0 V).
See the truth table
- Click Truth table in the equation card: every input combination and its output, for up to 6 inputs.
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